@namespace Oqtane.Modules.Admin.Pages
@using Oqtane.Interfaces
@inherits ModuleBase
@inject NavigationManager NavigationManager
@inject IPageService PageService
@inject IPageModuleService PageModuleService
@inject IThemeService  ThemeService
@inject ISystemService SystemService
@inject IStringLocalizer<Edit> Localizer
@inject IStringLocalizer<SharedResources> SharedLocalizer

@if (_initialized)
{
    <form @ref="form" class="@(validated ? "was-validated" : "needs-validation")" novalidate>
        @if (_page.UserId == null)
        {
            <TabStrip Refresh="@_refresh">
                <TabPanel Name="Settings" ResourceKey="Settings" Heading="Settings">
                    <div class="container">
                        <div class="row mb-1 align-items-center">
                            <Label Class="col-sm-3" For="name" HelpText="Enter the page name" ResourceKey="Name">Name: </Label>
                            <div class="col-sm-9">
                                <input id="name" class="form-control" @bind="@_name" maxlength="50" required />
                            </div>
                        </div>
                        @if (UserSecurity.IsAuthorized(PageState.User, RoleNames.Admin))
                        {
                            <div class="row mb-1 align-items-center">
                                <Label Class="col-sm-3" For="parent" HelpText="Select the parent for the page in the site hierarchy" ResourceKey="Parent">Parent: </Label>
                                <div class="col-sm-9">
                                        <select id="parent" class="form-select" value="@_parentid" @onchange="(e => ParentChanged(e))" required>
                                            <option value="-1">&lt;@Localizer["SiteRoot"]&gt;</option>
                                            @foreach (Page page in PageState.Pages)
                                            {
                                                if (UserSecurity.IsAuthorized(PageState.User, PermissionNames.View, page.PermissionList) && page.PageId != _pageId)
                                                {
                                                    <option value="@(page.PageId)">@(new string('-', page.Level * 2))@(page.Name)</option>
                                                }
                                            }
                                        </select>
                                </div>
                            </div>
                            <div class="row mb-1 align-items-center">
                                <Label Class="col-sm-3" For="move" HelpText="Select the location where you would like the page to be moved in relation to other pages" ResourceKey="Move">Move: </Label>
                                <div class="col-sm-9">
                                    <select id="move" class="form-select" @bind="@_insert" required>
                                        @if (_parentid == _currentparentid)
                                        {
                                            <option value="=">&lt;@Localizer["ThisLocation.Keep"]&gt;</option>
                                        }
                                        @if (_children != null && _children.Count > 0)
                                        {
                                            <option value="<<">@Localizer["ToBeginning"]</option>
                                            <option value="<">@Localizer["Before"]</option>
                                            <option value=">">@Localizer["After"]</option>
                                        }
                                        @if (_parentid != _currentparentid)
                                        {
                                            <option value=">>">@Localizer["ToEnd"]</option>
                                        }
                                    </select>
                                    @if (_children != null && _children.Count > 0 && (_insert == "<" || _insert == ">"))
                                    {
                                        <select class="form-select" @bind="@_childid">
                                            <option value="-1">&lt;@Localizer["Page.Select"]&gt;</option>
                                            @foreach (Page page in _children)
                                            {
                                                <option value="@(page.PageId)">@(page.Name)</option>
                                            }
                                        </select>
                                    }
                                </div>
                            </div>
                        }
                        else
                        {
                            <div class="row mb-1 align-items-center">
                                <Label Class="col-sm-3" For="parent" HelpText="Select the parent for the page in the site hierarchy" ResourceKey="Parent">Parent: </Label>
                                <div class="col-sm-9">
                                    <select id="parent" class="form-select" value="@_parentid" @onchange="(e => ParentChanged(e))" disabled>
                                        <option value="-1">&lt;@Localizer["SiteRoot"]&gt;</option>
                                        @if (_parent != null)
                                        {
                                            <option value="@(_parent.PageId)">@(new string('-', _parent.Level * 2))@(_parent.Name)</option>
                                        }
                                    </select>
                                </div>
                            </div>
                            <div class="row mb-1 align-items-center">
                                <Label Class="col-sm-3" For="move" HelpText="Select the location where you would like the page to be moved in relation to other pages" ResourceKey="Move">Move: </Label>
                                <div class="col-sm-9">
                                    <select id="move" class="form-select" @bind="@_insert" disabled>
                                        <option value="=">&lt;@Localizer["ThisLocation.Keep"]&gt;</option>
                                    </select>
                                </div>
                            </div>
                        }
                        <div class="row mb-1 align-items-center">
                            <Label Class="col-sm-3" For="navigation" HelpText="Select whether the page is part of the site navigation or hidden" ResourceKey="Navigation">Navigation? </Label>
                            <div class="col-sm-9">
                                <select id="navigation" class="form-select" @bind="@_isnavigation" required>
                                    <option value="True">@SharedLocalizer["Yes"]</option>
                                    <option value="False">@SharedLocalizer["No"]</option>
                                </select>
                            </div>
                        </div>
                        <div class="row mb-1 align-items-center">
                            <Label Class="col-sm-3" For="clickable" HelpText="Select whether the link in the site navigation is enabled or disabled" ResourceKey="Clickable">Clickable? </Label>
                            <div class="col-sm-9">
                                <select id="clickable" class="form-select" @bind="@_isclickable" required>
                                    <option value="True">@SharedLocalizer["Yes"]</option>
                                    <option value="False">@SharedLocalizer["No"]</option>
                                </select>
                            </div>
                        </div>
                        <div class="row mb-1 align-items-center">
                            <Label Class="col-sm-3" For="path" HelpText="Optionally enter a url path for this page (ie. home ). If you do not provide a url path, the page name will be used. If the page is intended to be the root path specify '/'." ResourceKey="UrlPath">Url Path: </Label>
                            <div class="col-sm-9">
                                <input id="path" class="form-control" @bind="@_path" maxlength="256" />
                            </div>
                        </div>
                        <div class="row mb-1 align-items-center">
                            <Label Class="col-sm-3" For="url" HelpText="Optionally enter a url which this page should redirect to when a user navigates to it" ResourceKey="Redirect">Redirect: </Label>
                            <div class="col-sm-9">
                                <input id="url" class="form-control" @bind="@_url" maxlength="500" />
                            </div>
                        </div>
                        <div class="row mb-1 align-items-center">
                            <Label Class="col-sm-3" For="icon" HelpText="Optionally provide an icon class name for this page which will be displayed in the site navigation" ResourceKey="Icon">Icon: </Label>
                            <div class="col-sm-8">
                                <InputList Value="@_icon" ValueChanged="IconChanged" DataList="@_icons" ResourceKey="Icon" ResourceType="@_iconresources" />
                            </div>
                            <div class="col-sm-1">
                                <i class="@_icon"></i>
                            </div>
                        </div>
                        <div class="row mb-1 align-items-center">
                            <Label Class="col-sm-3" For="personalizable" HelpText="Select whether you would like users to be able to personalize this page with their own content" ResourceKey="Personalizable">Personalizable? </Label>
                            <div class="col-sm-9">
                                <select id="personalizable" class="form-select" @bind="@_ispersonalizable" required>
                                    <option value="True">@SharedLocalizer["Yes"]</option>
                                    <option value="False">@SharedLocalizer["No"]</option>
                                </select>
                            </div>
                        </div>
                    </div>
                    <Section Name="Appearance" ResourceKey="Appearance" Heading="Appearance">
                        <div class="container">
                            <div class="row mb-1 align-items-center">
                                <Label Class="col-sm-3" For="title" HelpText="Optionally enter the page title. If you do not provide a page title, the page name will be used." ResourceKey="Title">Title: </Label>
                                <div class="col-sm-9">
                                    <input id="title" class="form-control" @bind="@_title" maxlength="200" />
                                </div>
                            </div>
                            <div class="row mb-1 align-items-center">
                                <Label Class="col-sm-3" For="theme" HelpText="Select the theme for this page" ResourceKey="Theme">Theme: </Label>
                                <div class="col-sm-9">
                                    <select id="theme" class="form-select" value="@_themetype" @onchange="(e => ThemeChanged(e))" required>
                                        @foreach (var theme in _themes)
                                        {
                                            <option value="@theme.TypeName">@theme.Name</option>
                                        }
                                    </select>
                                </div>
                            </div>
                            <div class="row mb-1 align-items-center">
                                <Label Class="col-sm-3" For="container" HelpText="Select the default container for the page" ResourceKey="DefaultContainer">Default Container: </Label>
                                <div class="col-sm-9">
                                    <select id="container" class="form-select" @bind="@_containertype" required>
                                        @foreach (var container in _containers)
                                        {
                                            <option value="@container.TypeName">@container.Name</option>
                                        }
                                    </select>
                                </div>
                            </div>
                        </div>
                    </Section>
                    <Section Name="PageContent" Heading="Page Content" ResourceKey="PageContent">
                        <div class="container">
                            <div class="row mb-1 align-items-center">
                                <Label Class="col-sm-3" For="headcontent" HelpText="Optionally enter content to be included in the page head (ie. meta, link, or script tags)" ResourceKey="HeadContent">Head Content: </Label>
                                <div class="col-sm-9">
                                    <textarea id="headcontent" class="form-control" @bind="@_headcontent" rows="3"></textarea>
                                </div>
                            </div>
                            <div class="row mb-1 align-items-center">
                                <Label Class="col-sm-3" For="bodycontent" HelpText="Optionally enter content to be included in the page body (ie. script tags)" ResourceKey="BodyContent">Body Content: </Label>
                                <div class="col-sm-9">
                                    <textarea id="bodycontent" class="form-control" @bind="@_bodycontent" rows="3"></textarea>
                                </div>
                            </div>
                        </div>
                    </Section>
                    <br />
                    <br />
                    <AuditInfo CreatedBy="@_createdby" CreatedOn="@_createdon" ModifiedBy="@_modifiedby" ModifiedOn="@_modifiedon" DeletedBy="@_deletedby" DeletedOn="@_deletedon"></AuditInfo>
                </TabPanel>
                <TabPanel Name="Permissions" ResourceKey="Permissions" Heading="Permissions">
                    <div class="container">
                        <div class="row mb-1 align-items-center">
                            <PermissionGrid EntityName="@EntityNames.Page" PermissionList="@_permissions" @ref="_permissionGrid" />
                        </div>
                    </div>
                </TabPanel>
                <TabPanel Name="PageModules" Heading="Modules" ResourceKey="PageModules">
                    <Pager Items="_pageModules">
                        <Header>
                        <th style="width: 1px;">&nbsp;</th>
                        <th style="width: 1px;">&nbsp;</th>
                        <th>@Localizer["ModuleTitle"]</th>
                        <th>@Localizer["ModuleDefinition"]</th>
                        </Header>
                        <Row>
                            <td><ActionLink Action="Settings" Text="Edit" Path="@_actualpath" ModuleId="@context.ModuleId" Security="SecurityAccessLevel.Edit" PermissionList="@context.PermissionList" ResourceKey="ModuleSettings" /></td>
                            <td><ActionDialog Header="Delete Module" Message="Are You Sure You Wish To Delete This Module?" Action="Delete" Security="SecurityAccessLevel.Edit" PermissionList="@context.PermissionList" Class="btn btn-danger" OnClick="@(async () => await DeleteModule(context))" ResourceKey="DeleteModule" /></td>
                            <td>@context.Title</td>
                            <td>@context.ModuleDefinition?.Name</td>
                        </Row>
                    </Pager>
                </TabPanel>
                @if (_themeSettingsType != null)
                {
                    <TabPanel Name="ThemeSettings" Heading="Theme Settings" ResourceKey="ThemeSettings">
                        @ThemeSettingsComponent
                    </TabPanel>
                    <br />
                }
            </TabStrip>
        }
        else
        {
            <TabStrip Refresh="@_refresh">
                <TabPanel Name="Settings" ResourceKey="Settings" Heading="Settings">
                    <div class="container">
                        <div class="row mb-1 align-items-center">
                            <Label Class="col-sm-3" For="title" HelpText="Optionally enter the page title. If you do not provide a page title, the page name will be used." ResourceKey="Title">Title: </Label>
                            <div class="col-sm-9">
                                <input id="title" class="form-control" @bind="@_title" maxlength="200" />
                            </div>
                        </div>
                        <div class="row mb-1 align-items-center">
                            <Label Class="col-sm-3" For="theme" HelpText="Select the theme for this page" ResourceKey="Theme">Theme: </Label>
                            <div class="col-sm-9">
                                <select id="theme" class="form-select" @bind="@_themetype" required>
                                    @foreach (var theme in _themes)
                                    {
                                        <option value="@theme.TypeName">@theme.Name</option>
                                    }
                                </select>
                            </div>
                        </div>
                        <div class="row mb-1 align-items-center">
                            <Label Class="col-sm-3" For="container" HelpText="Select the default container for the page" ResourceKey="DefaultContainer">Default Container: </Label>
                            <div class="col-sm-9">
                                <select id="container" class="form-select" @bind="@_containertype" required>
                                    @foreach (var container in _containers)
                                    {
                                        <option value="@container.TypeName">@container.Name</option>
                                    }
                                </select>
                            </div>
                        </div>
                    </div>
                </TabPanel>
                @if (_themeSettingsType != null)
                {
                    <TabPanel Name="ThemeSettings" Heading="Theme Settings" ResourceKey="ThemeSettings">
                        @ThemeSettingsComponent
                    </TabPanel>
                    <br />
                }
            </TabStrip>
        }
        <br />
        <button type="button" class="btn btn-success" @onclick="SavePage">@SharedLocalizer["Save"]</button>
        <button type="button" class="btn btn-secondary" @onclick="Cancel">@SharedLocalizer["Cancel"]</button>
    </form>
}

@code {
    public override SecurityAccessLevel SecurityAccessLevel => SecurityAccessLevel.View;

    private bool _initialized = false;
    private ElementReference form;
    private bool validated = false;
    private List<ThemeControl> _themes = new List<ThemeControl>();
    private List<ThemeControl> _containers = new List<ThemeControl>();
    private int _pageId;
    private string _name;
    private string _currentparentid;
    private string _parentid = "-1";
    private string _insert = "=";
    private List<Page> _children;
    private int _childid = -1;
    private string _isnavigation;
    private string _isclickable;
    private string _actualpath;
    private string _path;
    private string _url;
    private string _ispersonalizable;
    private string _title;
    private string _icon;
    private string _themetype;
    private string _containertype = "-";
    private Type _themeSettingsType;
    private object _themeSettings;
    private RenderFragment ThemeSettingsComponent { get; set; }
    private string _headcontent;
    private string _bodycontent;
    private List<Permission> _permissions = null;
    private PermissionGrid _permissionGrid;
    private List<Module> _pageModules;
    private string _createdby;
    private DateTime _createdon;
    private string _modifiedby;
    private DateTime _modifiedon;
    private string _deletedby;
    private DateTime? _deletedon;
    private bool _refresh = false;
    protected Page _page = null;
    protected Page _parent = null;
    protected Dictionary<string, string> _icons;
    private string _iconresources = "";

    protected override async Task OnInitializedAsync()
    {
        try
        {
            _pageId = Int32.Parse(PageState.QueryString["id"]);
            _page = await PageService.GetPageAsync(_pageId);
            _icons = await SystemService.GetIconsAsync();
            _iconresources = Utilities.GetFullTypeName(typeof(IconResources).AssemblyQualifiedName);

            if (_page != null && UserSecurity.IsAuthorized(PageState.User, PermissionNames.Edit, _page.PermissionList))
            {
                _name = _page.Name;
                if (_page.ParentId == null)
                {
                    _parentid = "-1";
                }
                else
                {
                    _parentid = _page.ParentId.ToString();
                    _parent = PageState.Pages.FirstOrDefault(item => item.PageId == _page.ParentId);
                }
                _children = new List<Page>();
                foreach (Page p in PageState.Pages.Where(item => (_parentid == "-1" && item.ParentId == null) || (item.ParentId == int.Parse(_parentid))))
                {
                    if (p.PageId != _pageId && UserSecurity.IsAuthorized(PageState.User, PermissionNames.View, p.PermissionList))
                    {
                        _children.Add(p);
                    }
                }
                _currentparentid = _parentid;
                _isnavigation = _page.IsNavigation.ToString();
                _isclickable = _page.IsClickable.ToString();
                _actualpath = _page.Path;
                _path = _actualpath;
                if (string.IsNullOrEmpty(_path))
                {
                    _path = "/";
                }
                else
                {
                    if (_path.Contains("/"))
                    {
                        _path = _path.Substring(_path.LastIndexOf("/") + 1);
                    }
                }
                _url = _page.Url;
                _icon = _page.Icon;
                _ispersonalizable = _page.IsPersonalizable.ToString();

                // appearance
                _title = _page.Title;
                _themetype = _page.ThemeType;
                if (string.IsNullOrEmpty(_themetype))
                {
                    _themetype = PageState.Site.DefaultThemeType;
                }
                _themes = ThemeService.GetThemeControls(PageState.Site.Themes);
                _containers = ThemeService.GetContainerControls(PageState.Site.Themes, _themetype);
                _containertype = _page.DefaultContainerType;
                if (string.IsNullOrEmpty(_containertype))
                {
                    _containertype = PageState.Site.DefaultContainerType;
                }

                // page content
                _headcontent = _page.HeadContent;
                _bodycontent = _page.BodyContent;

                // permissions
                _permissions = _page.PermissionList;

                // page modules
                _pageModules = PageState.Modules.Where(m => m.PageId == _page.PageId).ToList();

                // audit
                _createdby = _page.CreatedBy;
                _createdon = _page.CreatedOn;
                _modifiedby = _page.ModifiedBy;
                _modifiedon = _page.ModifiedOn;
                _deletedby = _page.DeletedBy;
                _deletedon = _page.DeletedOn;

                ThemeSettings();
                _initialized = true;
            }
            else
            {
                await logger.LogWarning("Error Loading Page {PageId}", _pageId);
                AddModuleMessage(Localizer["Error.Page.Load"], MessageType.Error);
            }
        }
        catch (Exception ex)
        {
            await logger.LogError(ex, "Error Loading Page {PageId} {Error}", _pageId, ex.Message);
            AddModuleMessage(Localizer["Error.Page.Load"], MessageType.Error);
        }
    }

    private async void ParentChanged(ChangeEventArgs e)
    {
        try
        {
            _parentid = (string)e.Value;
            _children = new List<Page>();
            foreach (Page p in PageState.Pages.Where(item => (_parentid == "-1" && item.ParentId == null) || (item.ParentId == int.Parse(_parentid))))
            {
                if (p.PageId != _pageId && UserSecurity.IsAuthorized(PageState.User, PermissionNames.View, p.PermissionList))
                {
                    _children.Add(p);
                }
            }
            _insert = (_parentid == _currentparentid) ? "=" : ">>";
            StateHasChanged();
        }
        catch (Exception ex)
        {
            await logger.LogError(ex, "Error Loading Child Pages For Parent {PageId} {Error}", _parentid, ex.Message);
            AddModuleMessage(Localizer["Error.ChildPage.Load"], MessageType.Error);
        }
    }

    private void ThemeChanged(ChangeEventArgs e)
    {
        _themetype = (string)e.Value;
        if (ThemeService.GetTheme(PageState.Site.Themes, _themetype)?.ThemeName != ThemeService.GetTheme(PageState.Site.Themes, PageState.Site.DefaultThemeType)?.ThemeName)
        {
            AddModuleMessage(Localizer["ThemeChanged.Message"], MessageType.Warning);
            _containers = ThemeService.GetContainerControls(PageState.Site.Themes, _themetype);
            _containertype = _containers.First().TypeName;
            ThemeSettings();
            StateHasChanged();
        }
    }

    private void ThemeSettings()
    {
        _themeSettingsType = null;
        var theme = PageState.Site.Themes.FirstOrDefault(item => item.Themes.Any(themecontrol => themecontrol.TypeName.Equals(_themetype)));
        if (theme != null && !string.IsNullOrEmpty(theme.ThemeSettingsType))
        {
            _themeSettingsType = Type.GetType(theme.ThemeSettingsType);
            if (_themeSettingsType != null)
            {
                ThemeSettingsComponent = builder =>
                {
                    builder.OpenComponent(0, _themeSettingsType);
                    builder.AddComponentReferenceCapture(1, inst => { _themeSettings = Convert.ChangeType(inst, _themeSettingsType); });
                    builder.CloseComponent();
                };
            }
            _refresh = true;
        }
    }

    private async Task SavePage()
    {
        validated = true;
        var interop = new Interop(JSRuntime);
        if (await interop.FormValid(form))
        {
            try
            {
                if (!string.IsNullOrEmpty(_themetype) && _containertype != "-")
                {
                    string currentPath = _page.Path;

                    _page.Name = _name;

                    if (string.IsNullOrEmpty(_path))
                    {
                        _path = _name;
                    }
                    if (_path.Contains("/"))
                    {
                        if (_path.EndsWith("/") && _path != "/")
                        {
                            _path = _path.Substring(0, _path.Length - 1);
                        }
                        _path = _path.Substring(_path.LastIndexOf("/") + 1);
                    }

                    if (_parentid == "-1")
                    {
                        _page.ParentId = null;
                        _page.Path = Utilities.GetFriendlyUrl(_path);
                    }
                    else
                    {
                        _page.ParentId = Int32.Parse(_parentid);
                        Page parent = PageState.Pages.FirstOrDefault(item => item.PageId == _page.ParentId);
                        if (parent.Path == string.Empty)
                        {
                            _page.Path = Utilities.GetFriendlyUrl(parent.Name) + "/" + Utilities.GetFriendlyUrl(_path);
                        }
                        else
                        {
                            _page.Path = parent.Path + "/" + Utilities.GetFriendlyUrl(_path);
                        }
                    }

                    var _pages = await PageService.GetPagesAsync(PageState.Site.SiteId);
                    if (_pages.Any(item => item.Path == _page.Path && item.PageId != _page.PageId))
                    {
                        AddModuleMessage(string.Format(Localizer["Mesage.Page.PathExists"], _path), MessageType.Warning);
                        return;
                    }

                    if (_page.ParentId == null && Constants.ReservedRoutes.Contains(_page.Name.ToLower()))
                    {
                        AddModuleMessage(string.Format(Localizer["Message.Page.Reserved"], _page.Name), MessageType.Warning);
                        return;
                    }

                    if (_insert != "=")
                    {
                        Page child;
                        switch (_insert)
                        {
                            case "<<":
                                _page.Order = 0;
                                break;
                            case "<":
                                child = PageState.Pages.FirstOrDefault(item => item.PageId == _childid);
                                if (child != null) _page.Order = child.Order - 1;
                                break;
                            case ">":
                                child = PageState.Pages.FirstOrDefault(item => item.PageId == _childid);
                                if (child != null) _page.Order = child.Order + 1;
                                break;
                            case ">>":
                                _page.Order = int.MaxValue;
                                break;
                        }
                    }
                    _page.IsNavigation = (_isnavigation == null || Boolean.Parse(_isnavigation));
                    _page.IsClickable = (_isclickable == null ? true : Boolean.Parse(_isclickable));
                    _page.Url = _url;
                    _page.Icon = _icon ?? string.Empty;
                    _page.IsPersonalizable = (_ispersonalizable != null && Boolean.Parse(_ispersonalizable));

                    // appearance
                    _page.Title = _title;
                    _page.ThemeType = _themetype;
                    if (!string.IsNullOrEmpty(_page.ThemeType) && _page.ThemeType == PageState.Site.DefaultThemeType)
                    {
                        _page.ThemeType = string.Empty;
                    }
                    _page.DefaultContainerType = _containertype;
                    if (!string.IsNullOrEmpty(_page.DefaultContainerType) && _page.DefaultContainerType == PageState.Site.DefaultContainerType)
                    {
                        _page.DefaultContainerType = string.Empty;
                    }

                    // page content
                    _page.HeadContent = _headcontent;
                    _page.BodyContent = _bodycontent;

                    // permissions
                    if (_page.UserId == null)
                    {
                        _page.PermissionList = _permissionGrid.GetPermissionList();
                    }

                    _page = await PageService.UpdatePageAsync(_page);
                    await PageService.UpdatePageOrderAsync(_page.SiteId, _page.PageId, _page.ParentId);
                    if (_currentparentid == string.Empty)
                    {
                        await PageService.UpdatePageOrderAsync(_page.SiteId, _page.PageId, null);
                    }
                    else
                    {
                        await PageService.UpdatePageOrderAsync(_page.SiteId, _page.PageId, int.Parse(_currentparentid));
                    }

                    if (_themeSettingsType != null && _themeSettings is ISettingsControl themeSettingsControl)
                    {
                        await themeSettingsControl.UpdateSettings();
                    }

                    await logger.LogInformation("Page Saved {Page}", _page);
                    if (!string.IsNullOrEmpty(PageState.ReturnUrl))
                    {
                        NavigationManager.NavigateTo(PageState.ReturnUrl);
                    }
                    else
                    {
                        NavigationManager.NavigateTo(NavigateUrl());
                    }
                }
                else
                {
                    AddModuleMessage(Localizer["Message.Required.PageInfo"], MessageType.Warning);
                }
            }
            catch (Exception ex)
            {
                await logger.LogError(ex, "Error Saving Page {Page} {Error}", _page, ex.Message);
                AddModuleMessage(Localizer["Error.Page.Save"], MessageType.Error);
            }
        }
        else
        {
            AddModuleMessage(SharedLocalizer["Message.InfoRequired"], MessageType.Warning);
        }
    }

    private void Cancel()
    {
        if (!string.IsNullOrEmpty(PageState.ReturnUrl))
        {
            NavigationManager.NavigateTo(PageState.ReturnUrl);
        }
        else
        {
            NavigationManager.NavigateTo(NavigateUrl());
        }
    }

    private async Task DeleteModule(Module module)
    {
        try
        {
            PageModule pagemodule = await PageModuleService.GetPageModuleAsync(_page.PageId, module.ModuleId);
            pagemodule.IsDeleted = true;
            await PageModuleService.UpdatePageModuleAsync(pagemodule);
            await logger.LogInformation(LogFunction.Update, "Module Deleted {Title}", module.Title);
            _pageModules.RemoveAll(item => item.PageModuleId == pagemodule.PageModuleId);
            StateHasChanged();
            NavigationManager.NavigateTo(NavigationManager.Uri + "&tab=PageModules");
        }
        catch (Exception ex)
        {
            await logger.LogError(ex, "Error Deleting Module {Title} {Error}", module.Title, ex.Message);
            AddModuleMessage(Localizer["Error.Module.Delete"], MessageType.Error);
        }
    }

    private void IconChanged(string NewIcon)
    {
        _icon = NewIcon;
    }
}
